# 条件判断，知道语法就行，判断使用 > < == != >= <=，并且和或者使用 and 或者 or
age1 = 18
age2 = 20
if age1 == 12 and age2 == 20:
    print("age1 == 12 and age2 == 20")
elif age1 == 12 or age2 == 20:
    print("age1 == 12 or age2 == 20")
else:
    print("age1 != 12 and age2 != 20")